Electric switch



Oct. 2, 1928.

R. O. W. LU-NDIN ELECTRIC SWITCH Filed Aug. 25, 1927 Patented Oct. 2, r I i I o UNITEDSTATES PATENT. OFFICE. Y

RAGNAR o. w. Lunnm, or NORTH A'I'TLEBORO, "MASSACHUSETTS, assrenon To BARBER ELECTRIC MANUFACTURING COMPANY or woman ATTLEBORO,

MASSACHUSETTS.

ELECTRIC SWITCH.

Application filed August 25, 1927. Serial No. 215,440

The present. invention relates to electric blank has wings 10 both being perforated at switches, and consists more particularly of 11 and connected together by an integral an improved constructionof meansfor actuportion 12. This blank is doubled over to ating the blade or blades of an electric form a U-shaped piece and preferably in switch, assembling the switch blade within the box,

It is common in practice to enclose the said piece 9 is threaded on the bail 6 through electric switch of a houselighting or service the slots 11. The insulating piece 7 is rivsystem within a closed box. The switch eted to the knife blade, and in assembling within the box is operated by external means, the switch, the base carrying the switch is 10 and the present invention is especially apfirst secured within the box, and then, when plicable to switches of the so enclosed type the switch is in a certain position, the coni The chief objects of the invention, nector 9 is united with the insulating piece amongst others, are to provide asimple and 7 by means of the connecting portion 12 efficient means for actuatingthe switch blade being engaged within the slot 13 of said in- 15 or blades and for coupling the same with sulating piece 7. said actuating means, and to provide a 0011- Theconnection of the actuator, it will be pling means, which may be readily 'assemseen, is readily effected and there is no bled, connected and maintained in its c011 chance of this connector becoming acciden nected position. tally disengaged. It will be understood 20 An embodiment of the invention will be that it is usually desirable that there should hereinafter more fully described and set be slight lostmotion in the connection of the forth, and which embodiment is illustrated switch actuator with the coupling means, and by the accompanying drawings, wherein: for this purpose the loose connection af- Figure 1 is asectional view showing the forded by the elongated slot 11 is utilized. switch and connector, the switch being This loose connection is particularly of admounted on a porcelain base contained with-, vantage when a plurality of knife blades are a box of which only a portion is shown, connected for simultaneous operation be- Fiig. 2 is a front elevation of the same 0011- cause by means of this connection, certain struction shown in Figure 1, and inequalities are compensated whereby better $.6- Figures 3 and 4 are detail views showing contact is obtained between the switch blade the construction of the coupling device. and the fixed contacts. The said connect- 7 Referring to the said drawings, 1 is the ing or end member 9 may be loosely con usual porcelain base mounted within the box nected to the insulating piece 7 so as to be 2 of which only a portion of the bottom is readily detachable, but if required said 3.) shown in the drawings. 3 represents the member may bepressed so as to tightly en 35 fixed contacts which are secured to the base gage the piece 7 so that said actuator cannot 1, and i is a switch blade pivotally connected be'easily detached. V at 5 to one of: the fixed contacts3; 6 is the Various modifications may be made in the bail or rod having an external handle, which construction and arrangement of the heroin- 40 is usually employed for operating the switch before described device without departing an externally. This bail passes through the tron'i thespirit'ot the invention, and it will 7 box and is pivoted, and so formed and 10- be understood that any modification coming cated that the required throw is obtained to fairly within the terms of the appended operate the switch. Y claims shall be covered thereby. The coupling device consists of an inter- I cla1me5 mediate piece 7, which is riveted at 8 to the 1. In an electric switch, a switch blade, switch blade 4, and said piece is composed of an actuating rod for said blade, coupling insulating material. The connecting device means between said blade and said actuating 9 is formed of sheet metal strip blanked out rod; said means comprising a slotted end inthe shape as shown in.Figure4-.,andwhich piece mounted on said rod and an intermediate insulating piece rigidly secured to said blade and detachably secured to said end piece.

2. In an electric switch, a switch blade, an actuator for said switch blade. coupling means operatively connected to said actuator, said means comprising an intermediate insulating piece secured to said blade and an end connecting, device composed of sheet metal bent to form a U-shaped member; said member engaging a slot in said intermediate member, and said end member hava slot in which said actuator is engaged.

Signed at North Attleboro, county of Bristol, State 01 Massachusetts, this 27th day of July, 1927.

RAGNAR o. W. LUNDIN. 

